OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application& T3 \8 C) _( D6 j/ b( J
/*
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* edma_test.c
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* brief EDMA3 Test Application
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*- R2 |0 y& q8 l/ x0 R/ {
* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 }* M9 X) ?8 o Z% |. t) j
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*/ B0 g. R. \2 Q- g$ j: H6 p
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or. B2 @7 V8 f+ [. ]' A
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.0 h2 N* b+ e. T9 U' p# K9 b
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any* Y8 j+ F! F% [) ] w
* kind, whether express or implied; without even the implied warranty" n7 q" k" N# [6 C
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 Z+ E& x& ?8 D. w
* GNU General Public License for more details.( k P* s/ e2 d/ p X0 J8 R! Q
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#include <linux/module.h>3 B9 Y( f$ o: x% @. S, R" t
#include <linux/init.h>) Z/ i' j2 Y! ^& x9 H# D* u
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>$ B8 w a: Z7 E/ V( ~5 C
#include <asm/io.h>; p) ]9 p! j* g& O
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>4 |$ ` N, c+ ?: W' {4 D7 I
#include <linux/mm.h>
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#include <linux/dma-mapping.h>; L G2 d: w) T. ]; U( c( l
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>& T: G- X- A! E R9 o+ }; O1 G
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/: @" D( z: X* l
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' [3 R9 S* D9 m: E; @
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)+ n) w. g9 b0 u. Z. |4 m: h
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else7 V l8 s3 w- ^! A" A3 q6 b
#define DMA_PRINTK( x... )+ i0 h4 }# U* [6 ^0 [* q6 q; T
#define DMA_FN_IN* [9 M. t' ^0 P: x8 f" h) o
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3* X1 [; V3 Q- o. G1 i% r" X
#define TCINTEN_SHIFT 20% |; L3 U4 s. t. r! G- _
#define ITCINTEN_SHIFT 21 }+ B3 _' O' t8 t
#define TCCHEN_SHIFT 222 }! x8 `9 S8 x" X
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;& v( C3 X3 p3 f) b" S: f8 Y) V9 o
static volatile int irqraised2 = 0;9 a; d, z% D, n3 Z$ h. x4 r1 v" x
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- _* q- d' V I6 r
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;& Z8 a# a. \6 d9 {; ~# K
dma_addr_t dmaphyssrc2 = 0;: \9 P- s% ]* R
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;# ]" y9 O1 Q3 Z9 Q7 ]
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char *dmabufsrc1 = NULL;9 O0 \: ]7 q. [8 ~9 A1 u! ]
char *dmabufsrc2 = NULL;, k9 z' o; }+ N
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;& G$ q& x4 i' e' X
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static int acnt = 512;
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static int bcnt = 8;4 l( i) N3 V, G0 e# e: |* X: m0 s5 V# r
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);3 E& @8 J+ R ^: u% W
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动